Paddle scrapers scrape dirt off the ground with a giant blade, and paddles rotate to pick the dirt up and drop it in a big can in the back. When the can is full, you open the bottom and the dirt drops out where ever you need it to go. The front part moves independently from the rear - it swivels in the middle. this means that if you hit a bump, the front of the machine will bounce/lift while the back of the machine (with the blade and can) stays on the ground picking up dirt. (you don't leave big woopties in the dirt this way. nice, clean cut.) the tires are about 6 feet tall and soft, so it's like riding on a couple of bouncy balls. The littlest bump makes the thing jump all over if you're moving along in 2nd or 3rd gear.
This one has an air ride seat, so it's a little better, but if you hit a bump - your head hits the ceiling.